Inside the USS Zumwalt

The USS Zumwalt is a 600 foot, 16,000 ton stealth destroyer of the US Navy. It is the most technologically advanced surface ship in the world.

Length

The Zumwalt is 600 feet long by 81 feet wide; roughly two football fields end-to-end in size.

Top speed

The two electric motors can propel the ship at 30 knots, or about 34 mph.

Displacement

In the water, the Zumwalt diplaces 17,534 tons of water; equal to 613,690 cubic feet of water, the water displaced could fill seven Olympic swimming pools.

Weight

The ship weighs in at 16,000 tons, which is equal to about 480 loaded semi-trailer trucks.


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Automation technology

Radar

Modified MRF (Multi-Function Radar) gives the Zumwalt VSR (Volume Search Radar) capabilities, allowing it to scan the horizon, low altitude, and high altitude simultaneously.

Sonar

Hull-mounted sonar detects underwater mines or submarines, and contributes to a 3D, 360-degree view for the ship’s defense systems.

Server enclosure (EMEs)

16 EMEs (Electronic Modular Enclosures) contain Commercial-Off-The-Shelf (COTS) servers and centralize all onboard computing. Each EME is 3360 cubic feet and supplies power and cooling to the servers.

It also protects the server from shock, vibration, and outside electronic intrusion or interference.

Server tasks

The servers, or Total Ship Computing Environment Infrastructure (TSCEI), run on various forms of Linux, with 6 million+ lines of code to read and control ship functions. This allows automation of important functions, such as:

Fire suppression systems

Pipe pressure & rupture isolation

Ship steering

Ship defense

Using information from radar, sonar, and other onboard sensors, the TSCEI can make decisions in defending the ship. The TSCEI can detect, track, and defend against threats autonomously. The information from the TSCEI is constantly collected and logged, much like the “Black Box” on aircraft.

Ops center

The ops center is filled with three-display computers, equipped with ID card readers. Sailors insert an ID card, and the computer displays the information that sailor is permitted to access.

Personal tech

In addition to the centralized computing in the ops center, issued laptops can be used almost anywhere on the ship. NCOs (non-commissioned officers) and above are also issued cell phones.

Crew count

Automation reduces how many crew members the ship needs; using only 148 crewmen as opposed to about 300.


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Armament

Close-in guns (MK-46)

30mm close-in guns protect the ship from small, fast boats and are accurate up to two miles.

Advanced Gun System (AGS)

AGSs are 155mm cannons that fire rocket-assisted, GPS-guided rounds. These systems can hit within 30-inches of a target at 72 miles (like hitting the bullseye on a dart board from 5 miles away). Auto-feeding, "infinite magazines" are reloadable during operation.

Vertical Launch Systems

MK-57 cells

80 MK-57 cells hold SM-6, ESSM, and Tomahawk missiles.

SM-6s

SM-6s (standard missiles) track and destroy enemy aircraft.

ESSMs (Evolved Sea Sparrow Missile)

ESSMs (Evolved Sea Sparrow Missile) are nimbler than the SM-6, and are used to track and destroy enemy missiles and rockets.

Tomahawk missiles

Tomahawk missiles are used for sea-to-land operations. GPS guidance makes them accurate up to 1,550 miles (roughly the distance from New York City, NY to Denver, CO).


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Structure

Stealth shape

The ship is shaped to reflect radar signals away from the source. This style of construction reduces both the radar and infrared signature to that of a 50-foot vessel.

Material

The superstructure is made from sandwiched composite materials of balsa wood and carbon fiber, and is EMC (electromagnetic compatibility) shielded.

Tumblehome hull

The tumblehome hull tapers upward toward the deck, placing the bulk of the hull near the water line.

This increases stealth capability by blending the hull with the surface of the water, limiting deck surface above water, and decreasing wake.

Flight deck

The flight deck is large enough to accommodate operations of F-35 and MV-22 Osprey aircraft.

Bay doors

Rear bay doors allow access to two rigid hull boats and a staging area for assault crews.

Hangar

The hangar has enough space to house two Sikorsky helicopters, or three UAVs (Unmanned Ariel Vehicles). Automated systems secure the helicopters, and move them between the hangar and the flight deck.

Power & propulsion

Emergency generator

An extra diesel generator provides emergency power if the main and auxiliary turbines are damaged.

Generator

Five separate generators provide power for the electrically-driven Zumwalt. Generated power flows through the central system, and gets distributed to the drive motors, weapons, and EMEs.

Turbines

Jet engines run generators that produce power for the ship. Each turbine is capable of 38 megawatts of power – enough to power over 6,000 homes. RPM, temperature levels, and amount of power produced are monitored and adjusted automatically for what the ship needs.

Drive motors

Two electric, Advanced Induction Motors (AIM) connect directly to the propeller shafts without transmissions or complicated gearing. Electric motors provide maximum torque from 0 - 18,000 RPMs, and can be 90% efficient, only losing 10% of their energy to heat or friction.

References

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